The structure reveals that pro509 at the tip of loop iii, rather than the previously identified tyrosine y506 and y507, overlaps the binding site of tetracycline and is therefore directly involved in releasing tetracycline from the ribosome.

Yes clarinex desloratadine has only slight differences in chemical structure from the original product of claritin and in my clinical experience you will not notice any difference in relieving your allergy symptoms.